"""Reads vehicle status from BMW connected drive portal."""
import logging

from homeassistant.components.binary_sensor import BinarySensorDevice
from homeassistant.const import LENGTH_KILOMETERS

from . import DOMAIN as BMW_DOMAIN

_LOGGER = logging.getLogger(__name__)

SENSOR_TYPES = {
    "lids": ["Doors", "opening", "mdi:car-door"],
    "windows": ["Windows", "opening", "mdi:car-door"],
    "door_lock_state": ["Door lock state", "safety", "mdi:car-key"],
    "lights_parking": ["Parking lights", "light", "mdi:car-parking-lights"],
    "condition_based_services": ["Condition based services", "problem", "mdi:wrench"],
    "check_control_messages": ["Control messages", "problem", "mdi:car-tire-alert"],
}

SENSOR_TYPES_ELEC = {
    "charging_status": ["Charging status", "power", "mdi:ev-station"],
    "connection_status": ["Connection status", "plug", "mdi:car-electric"],
}

SENSOR_TYPES_ELEC.update(SENSOR_TYPES)


def setup_platform(hass, config, add_entities, discovery_info=None):
    """Set up the BMW sensors."""
    accounts = hass.data[BMW_DOMAIN]
    _LOGGER.debug("Found BMW accounts: %s", ", ".join([a.name for a in accounts]))
    devices = []
    for account in accounts:
        for vehicle in account.account.vehicles:
            if vehicle.has_hv_battery:
                _LOGGER.debug("BMW with a high voltage battery")
                for key, value in sorted(SENSOR_TYPES_ELEC.items()):
                    if key in vehicle.available_attributes:
                        device = BMWConnectedDriveSensor(
                            account, vehicle, key, value[0], value[1], value[2]
                        )
                        devices.append(device)
            elif vehicle.has_internal_combustion_engine:
                _LOGGER.debug("BMW with an internal combustion engine")
                for key, value in sorted(SENSOR_TYPES.items()):
                    if key in vehicle.available_attributes:
                        device = BMWConnectedDriveSensor(
                            account, vehicle, key, value[0], value[1], value[2]
                        )
                        devices.append(device)
    add_entities(devices, True)


class BMWConnectedDriveSensor(BinarySensorDevice):
    """Representation of a BMW vehicle binary sensor."""

    def __init__(
        self, account, vehicle, attribute: str, sensor_name, device_class, icon
    ):
        """Constructor."""
        self._account = account
        self._vehicle = vehicle
        self._attribute = attribute
        self._name = "{} {}".format(self._vehicle.name, self._attribute)
        self._unique_id = "{}-{}".format(self._vehicle.vin, self._attribute)
        self._sensor_name = sensor_name
        self._device_class = device_class
        self._icon = icon
        self._state = None

    @property
    def should_poll(self) -> bool:
        """Return False.

        Data update is triggered from BMWConnectedDriveEntity.
        """
        return False

    @property
    def unique_id(self):
        """Return the unique ID of the binary sensor."""
        return self._unique_id

    @property
    def name(self):
        """Return the name of the binary sensor."""
        return self._name

    @property
    def icon(self):
        """Icon to use in the frontend, if any."""
        return self._icon

    @property
    def device_class(self):
        """Return the class of the binary sensor."""
        return self._device_class

    @property
    def is_on(self):
        """Return the state of the binary sensor."""
        return self._state

    @property
    def device_state_attributes(self):
        """Return the state attributes of the binary sensor."""
        vehicle_state = self._vehicle.state
        result = {"car": self._vehicle.name}

        if self._attribute == "lids":
            for lid in vehicle_state.lids:
                result[lid.name] = lid.state.value
        elif self._attribute == "windows":
            for window in vehicle_state.windows:
                result[window.name] = window.state.value
        elif self._attribute == "door_lock_state":
            result["door_lock_state"] = vehicle_state.door_lock_state.value
            result["last_update_reason"] = vehicle_state.last_update_reason
        elif self._attribute == "lights_parking":
            result["lights_parking"] = vehicle_state.parking_lights.value
        elif self._attribute == "condition_based_services":
            for report in vehicle_state.condition_based_services:
                result.update(self._format_cbs_report(report))
        elif self._attribute == "check_control_messages":
            check_control_messages = vehicle_state.has_check_control_messages
            if check_control_messages:
                cbs_list = []
                for message in check_control_messages:
                    cbs_list.append(message["ccmDescriptionShort"])
                result["check_control_messages"] = cbs_list
            else:
                result["check_control_messages"] = "OK"
        elif self._attribute == "charging_status":
            result["charging_status"] = vehicle_state.charging_status.value
            result["last_charging_end_result"] = vehicle_state.last_charging_end_result
        elif self._attribute == "connection_status":
            result["connection_status"] = vehicle_state.connection_status

        return sorted(result.items())

    def update(self):
        """Read new state data from the library."""
        from bimmer_connected.state import LockState
        from bimmer_connected.state import ChargingState

        vehicle_state = self._vehicle.state

        # device class opening: On means open, Off means closed
        if self._attribute == "lids":
            _LOGGER.debug("Status of lid: %s", vehicle_state.all_lids_closed)
            self._state = not vehicle_state.all_lids_closed
        if self._attribute == "windows":
            self._state = not vehicle_state.all_windows_closed
        # device class safety: On means unsafe, Off means safe
        if self._attribute == "door_lock_state":
            # Possible values: LOCKED, SECURED, SELECTIVE_LOCKED, UNLOCKED
            self._state = vehicle_state.door_lock_state not in [
                LockState.LOCKED,
                LockState.SECURED,
            ]
        # device class light: On means light detected, Off means no light
        if self._attribute == "lights_parking":
            self._state = vehicle_state.are_parking_lights_on
        # device class problem: On means problem detected, Off means no problem
        if self._attribute == "condition_based_services":
            self._state = not vehicle_state.are_all_cbs_ok
        if self._attribute == "check_control_messages":
            self._state = vehicle_state.has_check_control_messages
        # device class power: On means power detected, Off means no power
        if self._attribute == "charging_status":
            self._state = vehicle_state.charging_status in [ChargingState.CHARGING]
        # device class plug: On means device is plugged in,
        #                    Off means device is unplugged
        if self._attribute == "connection_status":
            self._state = vehicle_state.connection_status == "CONNECTED"

    def _format_cbs_report(self, report):
        result = {}
        service_type = report.service_type.lower().replace("_", " ")
        result["{} status".format(service_type)] = report.state.value
        if report.due_date is not None:
            result["{} date".format(service_type)] = report.due_date.strftime(
                "%Y-%m-%d"
            )
        if report.due_distance is not None:
            distance = round(
                self.hass.config.units.length(report.due_distance, LENGTH_KILOMETERS)
            )
            result["{} distance".format(service_type)] = "{} {}".format(
                distance, self.hass.config.units.length_unit
            )
        return result

    def update_callback(self):
        """Schedule a state update."""
        self.schedule_update_ha_state(True)

    async def async_added_to_hass(self):
        """Add callback after being added to hass.

        Show latest data after startup.
        """
        self._account.add_update_listener(self.update_callback)
